 |
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| optics | |||
| optical train | |||
| lens system | |||
| hallucination | |||
| optical system; optic | |||
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| visual effect | |||
| Optik: 94 phrases in 17 subjects |
| Antennas and waveguides | 3 |
| Earth sciences | 10 |
| Education | 2 |
| Foreign trade | 1 |
| General | 6 |
| Health care | 3 |
| Information technology | 2 |
| Measuring instruments | 1 |
| Medical | 1 |
| Medical appliances | 7 |
| Microelectronics | 3 |
| Military | 1 |
| Optics branch of physics | 41 |
| Physics | 8 |
| Radio | 1 |
| Technology | 3 |
| Transport | 1 |